Foot warmer cushion



FIG. 1 is a top, front, and left side perspective view of a foot warmer cushion showing my new design;

FIG. 2 is a front elevational view thereof, showing the mouth of the cushion in an open condition;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image of that shown;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a top plan view thereof, the bottom being a mirror image of that shown. 

The ornamental design for a foot warmer cushion, as shown and described. 